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8 clients · secrets stay placeholders

JSON (mcpServers)Claude CodeCodexOpenCodeCursorVS CodeGemini CLIGoose

{
  "mcpServers": {
    "email-verifier": {
      "type": "http",
      "url": "https://mailvalid.io/mcp/",
      "headers": {
        "X-API-Key": "${X_API_KEY}",
        "Authorization": "${X_API_KEY}"
      }
    }
  }
}

claude mcp add --transport http email-verifier https://mailvalid.io/mcp/ --header "X-API-Key: ${X_API_KEY}" --header "Authorization: ${X_API_KEY}"

[mcp_servers.email-verifier]
url = "https://mailvalid.io/mcp/"
env_http_headers = { "X-API-Key" = "X_API_KEY", "Authorization" = "X_API_KEY" }

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "email-verifier": {
      "type": "remote",
      "url": "https://mailvalid.io/mcp/",
      "enabled": true,
      "headers": {
        "X-API-Key": "{env:X_API_KEY}",
        "Authorization": "{env:X_API_KEY}"
      }
    }
  }
}

{
  "mcpServers": {
    "email-verifier": {
      "type": "http",
      "url": "https://mailvalid.io/mcp/",
      "headers": {
        "X-API-Key": "${X_API_KEY}",
        "Authorization": "${X_API_KEY}"
      }
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=email-verifier&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vbWFpbHZhbGlkLmlvL21jcC8iLCJoZWFkZXJzIjp7IlgtQVBJLUtleSI6IiR7WF9BUElfS0VZfSIsIkF1dGhvcml6YXRpb24iOiIke1hfQVBJX0tFWX0ifX0%3D"
}

{
  "servers": {
    "email-verifier": {
      "type": "http",
      "url": "https://mailvalid.io/mcp/",
      "headers": {
        "X-API-Key": "${X_API_KEY}",
        "Authorization": "${X_API_KEY}"
      }
    }
  }
}

{
  "mcpServers": {
    "email-verifier": {
      "httpUrl": "https://mailvalid.io/mcp/",
      "headers": {
        "X-API-Key": "${X_API_KEY}",
        "Authorization": "${X_API_KEY}"
      }
    }
  }
}

extensions:
  "email-verifier":
    enabled: true
    name: "email-verifier"
    type: streamable_http
    uri: "https://mailvalid.io/mcp/"
    headers:
      "X-API-Key": "${X_API_KEY}"
      "Authorization": "${X_API_KEY}"
    timeout: 300

Placeholders to fill from your own secret store: ${X_API_KEY}, ${X_API_KEY}. The registry never accepts secret values.

Quality 81 / 100new

protocol75 · weight 25

warn
protocol.modernnewest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
n/a
protocol.statelessonly applies to 2026-07-28 servers
pass
protocol.transportstreamable HTTP
n/a
protocol.list_ttlonly applies to 2026-07-28 servers

authorizationn/a · weight 15

n/a
auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
n/a
auth.secret_in_urlno templated URL

tool hygiene86 · weight 30

pass
tools.descriptionsevery tool has a description
pass
tools.description_lengthdescriptions are concise
pass
tools.schemasevery tool has an object input schema
pass
tools.annotations6 of 6 tools declare readOnlyHint or destructiveHint
fail
tools.directory_hintsno tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: verify_email (destructiveHint, idempotentHint); submit_bulk_verification (destructiveHint, idempotentHint); list_bulk_jobs (destructiveHint, idempotentHint, openWorldHint); …
pass
tools.token_costabout 641 tokens to load every tool
pass
tools.api_dumptools are not a one-to-one API dump

stabilityn/a · weight 15

n/a
stability.changes, stability.rug_pulltool history recorded for 5 of the 7 days needed

dependenciesn/a · weight 15

n/a
deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package

6 tools, about 641 tokens to load them all · tool set cd1aa301b7e8 · checked 2026-10-20 16:30 UTC

Tool changes

No tool definition changes recorded. A server's first observation is its baseline; later probes record what changes.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 82 / 100

no-repository

provenance55

liveness98

freshness100

hygiene80

+dns-namespace +website +reachable +uptime-95% +updated-5d-ago -no-repository

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Endpoints

remote	auth	reachable	uptime 30d	p50	protocol	last ok
`https://mailvalid.io/mcp/` streamable-http	api_key `${X_API_KEY}`	yes	95%	348 ms	2025-11-25	2026-10-20

Tools (6)

`cancel_bulk_job`destructive	Cancel a pending or processing bulk job and release any reserved credits. Requires an API key.
`get_bulk_job`read-only	Get the status, progress, and (when complete) results of a bulk job by its job_id. Requires an API key.
`get_credit_balance`read-only	Return your current credit balance and lifetime usage. Requires an API key.
`list_bulk_jobs`read-only	List your recent bulk verification jobs (paginated, newest first). Optionally filter by status. Requires an API key.
`submit_bulk_verification`	Queue a list of emails for asynchronous verification. Reserves up to N credits (final charge settles on completion). Poll get_bulk_job for status and results. Optionally provide webhook_url for a completion callback. Requires an API key. Returns {job_id, status, total_emails, credits_reserved}.
`verify_email`	Verify a single email's deliverability (syntax, DNS/MX, SMTP mailbox, disposable / role / catch-all detection, confidence score). Costs 1 credit for a billable result (valid/invalid/catch_all/do_not_mail), whether fresh or served from cache. `unknown` results are free. Requires an API key. Returns {success, credits_used, result}.

Schemas: list_tools.

Similar MCP servers

Official server.json

{
  "name": "io.mailvalid/email-verifier",
  "title": "MailValid Email Verification",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://mailvalid.io/mcp/",
      "type": "streamable-http",
      "headers": [
        {
          "name": "X-API-Key",
          "isSecret": true,
          "isRequired": true,
          "description": "Your MailValid API key (starts with mv_live_). Create one at https://mailvalid.io/dashboard/api-keys"
        }
      ]
    }
  ],
  "version": "1.0.0",
  "websiteUrl": "https://mailvalid.io",
  "description": "Verify emails: syntax, MX, SMTP mailbox, disposable, role and catch-all checks. Single and bulk."
}